Impact wrench



FIG. 1 is a left-side view of the impact wrench showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a right-side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a bottom view thereof. 

The ornamental design for an impact wrench, as shown and described. 